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Twenty carcharhinid sharks of 3 species were fed pilchards at different frequencies to examine feeding-growth relationships. These results are among the first in Australia on food intake and growth of wild-caught juvenile and sub-adult carcharhinids held in captivity. Mean consumption rates (± SE) for all feeding rations were 2.91% (± 0.28) body weight per day (BWD) for Carcharhinus dussumieri, 3.44% (± 0.40) BWD for C tilstoni and 3.35% (±0.34) BWD for Negaprion acutidens. N. acutidens had the highest consumption rate of 5.02% BWD at feeds d -1 . Highest mean growth rates were 0.78% (±0.11) BWD for C. dussumieri, 1.34% BWD (± 0.54) for C. tilstom and 1.12% (n = 1) BWD for N. acutidens. Maintenance ration estimates were 1.29% BWD for C. dussumieri, 1.31% BWD for N. acutidens. and 2.06% BWD for C. tilstoni. These are similar to literature estimates. High consumption rates did not always translate directly to high growth rates.

Feeding of captive, tropical carcharhinid sharks from the Embley River estuary, northern Australia